Cyclones, hurricanes and typhoons
Cyclones are among the most frequently occurring natural disasters in warm seas.
Every year they cause considerable devastation.They are essentially marine monsters, requiring a large expanse of warm water at least 26°C in temperature and 50 m in depth, before they can develop. Over land they lose their strength and peter out, but not before causing some damage. Such phenomena must be monitored closely in order to be able to alert the populations involved. Nothing is better-suited to this than satellites, with their birds-eye view. Wind speed at the sea surface, clouds, wave height, precipitation and ocean surface temperature, can all be measured by their instruments.
Because heat in the ocean plays a major role in the formation and intensification of cyclones, eddies and warm and cold currents may modify a cyclone's trajectory and intensity. Altimetry contributes to cyclone forecasting as it improves our understanding of ocean circulation. Moreover, altimetry data on wave heights and wind speeds are used in wave forecasting models.
- News, 2011-02-04 <link en news-storage news-detail and hurricane in australia seen by>Flooding and hurricane in Australia seen by altimetry
- News, 2010-09-01 Earl, a new hurricane approaching Caribbean sea
- News, 2010-07-02 <link en news-storage news-detail the first atlantic hurricane of>Alex, the first Atlantic hurricane of the year
- News, 2010-03-19 <link en news-storage news-detail season in pacific and indian>Hurricane season in Pacific and Indian Oceans
- News, 2010-02-05 <link en news-storage news-detail oli seen by>Hurricane Oli seen by altimetry
- News, 2009-09-07 Hurricane Jimena seen by Jason-2
- News, 2009-08-14 Typhoon Morakot seen by Jason-2
- News, 2008-10-03 Typhoon Jangmi as seen by Jason-2
- News, 2008-09-12 Hurricane Ike seen by Jason-2
- News, 2008-09-04 Series of hurricanes in the Atlantic
- News, 2008-09-02 Hurricane Gustav as seen by Jason-2
Other material
- Aviso Newsletter #9: Using satellite altimetry to identify regions of hurricane intensification, G. Goni, P. Black, J. Trinanes
- Aviso Newsletter #6: Altimetry and sea-state forecasting at Météo-France, J.-M. Lefèvre, D. Le Meur, B. Fradon, J. Guesquin, F. Duret and J. Poitevin
- Video: Altimetry applications in videos: Monitoring Hurricanes
- Poster: Seeing the hurricanes coming
- Poster: Monitoring Hurricane Isabel (pdf)
Data
- OSDR-OGDR
- gridded wind/wave (to localize the event)
- Data use case about Hurricane Katrina on Radar Altimetry Tutorial